低能耗夹芯保温墙桁架连接件拉剪试验研究

尹展; 张曰果; 杨思忠; 任成传; 周剑; 刘兴华; 郁银泉

doi:10.13204/j.gyjzG20052507

低能耗夹芯保温墙桁架连接件拉剪试验研究

doi: 10.13204/j.gyjzG20052507

1. 沈阳建筑大学土木工程学院, 沈阳 110168;
2. 北京市住宅产业化集团股份有限公司, 北京 100161;
3. 北京市燕通建筑构件有限公司, 北京 102202;
4. 建研科技股份有限公司, 北京 100013;
5. 中国建筑标准设计研究院有限公司, 北京 100048

基金项目:

国家重点研发计划资助（2017YFC0703700）；辽宁省自然科学基金指导计划项目（2019-ZD-0674）。

详细信息

作者简介:
尹展,女,1991年出生,硕士研究生。电子信箱:596133744@qq.com

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出版历程
- 收稿日期: 2020-04-05

EXPERIMENTAL RESEARCH ON TENSILE AND SHEAR ACTION OF TRUSS CONNECTIONS OF LOW-ENERGY SANDWICH INSULATION WALLS

1. School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China;
2. Beijing Building Industrialization Group Co., Ltd., Beijing 100161, China;
3. Yantong Precast Concrete Co., Ltd., Beijing 102202, China;
4. Jianyan Technology Co., Ltd., Beijing 100013, China;
5. China Institute of Building Standard Design & Research Co., Ltd., Beijing 100048, China

摘要

摘要: 预制混凝土夹芯保温墙内外叶墙板间的桁架连接件在外墙板重力和风吸力作用下处于拉剪受力状态。为研究桁架连接件的拉剪复合受力性能，针对佩克PD型桁架连接件，对6个拉剪模型进行试验研究。试验结果表明：在拉剪作用下，保温层厚度不变时，夹芯墙的抗剪承载力随着拉力的增大而减小；而在拉力不变条件下，随着保温层厚度的增加，夹芯墙的抗剪极限承载力和变形均增大；由试件的最终破坏形态可知，桁架连接件在拉剪复合受力下的破坏形式表现为受力较大腹杆拉断或节点处焊点拉开。由试验所得该类桁架连接件的拉剪承载力大于现行设计承载力取值，具备一定的安全储备。
- 预制夹芯保温墙 /
- 桁架连接件 /
- 拉剪复合受力 /
- 试验研究
Abstract: The truss connection between the inner and outer leaf wall panels of the prefabricated concrete sandwich insulation wall is in the tension and shear state under the outer wall panel self weight and wind suction. In order to study the mechanical properties of the truss connection under tension and shear composite stress, 6 tensile-shear models of the Peikko PD truss connection were tested. The test results showed that the shear capacity of sandwich wall decreased with the increase of tensile force when the thickness of insulation layer was constant in the tension and shear state,while the shear capacity and deformation of sandwich wall increased with the increase of thickness of insulation layer when the tensile force was constant.According to the final failure form of the specimens, under the tensile-shear composite stress the failure form of the truss connection was that the web member in larger tension was broken or the welding spot was pulled apart at the joint.The test result showed that the tensile-shear bearing capacity of this kind of truss connectors was larger than the current design bearing capacity,which has a certain safety reserve.
- precast sandwich thermal insulation wall /
- truss connector /
- tensile-shear composite stress /
- experimental study

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